[PATCH v2 1/3] dt-bindings: serial: snps-dw-apb-uart: Add one more reset signal for StarFive JH7110 SoC

From: Hal Feng
Date: Tue Jun 04 2024 - 04:48:19 EST


The UART of StarFive JH7110 has two reset signals.
Both of them are necessary for JH7110 to initialize UART.

Signed-off-by: Hal Feng <hal.feng@xxxxxxxxxxxxxxxx>
---
.../bindings/serial/snps-dw-apb-uart.yaml | 18 +++++++++++++++++-
1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml
index 1001d2a6ace8..4cdb0dcaccf3 100644
--- a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml
+++ b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml
@@ -13,6 +13,20 @@ allOf:
- $ref: serial.yaml#
- $ref: rs485.yaml#

+ - if:
+ properties:
+ compatible:
+ contains:
+ const: starfive,jh7110-uart
+ then:
+ properties:
+ resets:
+ minItems: 2
+ else:
+ properties:
+ resets:
+ maxItems: 1
+
properties:
compatible:
oneOf:
@@ -48,6 +62,7 @@ properties:
- enum:
- starfive,jh7100-hsuart
- starfive,jh7100-uart
+ - starfive,jh7110-uart
- const: snps,dw-apb-uart
- const: snps,dw-apb-uart

@@ -82,7 +97,8 @@ properties:
type: boolean

resets:
- maxItems: 1
+ minItems: 1
+ maxItems: 2

reg-shift: true

--
2.43.2